From 05672cb8988cd30a798ea3fbce124695fc76f09c Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Thu, 14 Nov 2019 04:00:03 +0200 Subject: [PATCH 01/16] more vbe --- src/dos/inttypes.h | 5 +- src/dos/vbe.c | 188 ++++++++++++++++++++++++++++++++++++++++++++++++++-- src/dos/vbe.h | 108 +++++++++++++++++++++++++++++- 3 files changed, 293 insertions(+), 8 deletions(-) diff --git a/src/dos/inttypes.h b/src/dos/inttypes.h index 6f941ad..14d6395 100644 --- a/src/dos/inttypes.h +++ b/src/dos/inttypes.h @@ -18,7 +18,7 @@ along with this program. If not, see . #ifndef INT_TYPES_H_ #define INT_TYPES_H_ -#if defined(__DOS__) || defined(WIN32) +#if defined(__WATCOMC__) && __WATCOMC__ < 0x1200 typedef char int8_t; typedef short int16_t; typedef long int32_t; @@ -27,7 +27,8 @@ typedef unsigned char uint8_t; typedef unsigned short uint16_t; typedef unsigned long uint32_t; -typedef unsigned long intptr_t; +typedef long intptr_t; +typedef unsigned long uintptr_t; #else #include #endif diff --git a/src/dos/vbe.c b/src/dos/vbe.c index d5d75df..6225084 100644 --- a/src/dos/vbe.c +++ b/src/dos/vbe.c @@ -1,28 +1,208 @@ +#include +#include +#include +#include #include "vbe.h" #include "cdpmi.h" -int vbe_getinfo(struct vbe_info *info) + +#define FIXPTR(ptr) \ + do { \ + uint32_t paddr = (uint32_t)(ptr); \ + uint16_t pseg = paddr >> 16; \ + uint16_t poffs = paddr & 0xffff; \ + if(pseg == seg && poffs < 512) { \ + paddr = ((uint32_t)seg << 4) + poffs; \ + } else { \ + paddr = ((uint32_t)pseg << 4) + poffs; \ + } \ + (ptr) = (void*)paddr; \ + } while(0) + +/* hijack the "VESA" sig field, to pre-cache number of modes */ +#define NMODES(inf) *(uint16_t*)((inf)->sig) +#define NACCMODES(inf) *(uint16_t*)((inf)->sig + 2) + +int vbe_info(struct vbe_info *info) { + int i, num; void *lowbuf; uint16_t seg, sel; + uint16_t *modeptr; struct dpmi_regs regs = {0}; - if(!(seg = dpmi_alloc(512 / 16, &sel))) { + assert(sizeof *info == 512); + + if(!(seg = dpmi_alloc(sizeof *info / 16, &sel))) { return -1; } + lowbuf = (void*)((uint32_t)seg << 4); + + memcpy(lowbuf, "VBE2", 4); regs.eax = 0x4f00; regs.es = seg; regs.edi = 0; dpmi_int(0x10, ®s); - if(regs.eax & 0xff00) { + if((regs.eax & 0xffff) != 0x4f) { + fprintf(stderr, "vbe_get_info (4f00) failed\n"); dpmi_free(sel); return -1; } + memcpy(info, lowbuf, sizeof *info); + dpmi_free(sel); + + FIXPTR(info->oem_name); + FIXPTR(info->vendor); + FIXPTR(info->product); + FIXPTR(info->revstr); + FIXPTR(info->modes); + FIXPTR(info->accel_modes); + + modeptr = info->modes; + while(*modeptr != 0xffff) { + if(modeptr - info->modes >= 256) { + modeptr = info->modes; + break; + } + modeptr++; + } + NMODES(info) = modeptr - info->modes; + + if(info->caps & VBE_ACCEL) { + modeptr = info->accel_modes; + while(*modeptr != 0xffff) { + if(modeptr - info->accel_modes >= 256) { + modeptr = info->accel_modes; + break; + } + modeptr++; + } + NACCMODES(info) = modeptr - info->accel_modes; + } + return 0; +} + +int vbe_num_modes(struct vbe_info *info) +{ + return NMODES(info); +} + +int vbe_mode_info(int mode, struct vbe_mode_info *minf) +{ + int i, num; + void *lowbuf; + uint16_t seg, sel; + struct dpmi_regs regs = {0}; + + assert(sizeof *minf == 256); + assert(offsetof(struct vbe_mode_info, max_pixel_clock) == 0x3e); + + if(!(seg = dpmi_alloc(sizeof *minf / 16, &sel))) { + return -1; + } lowbuf = (void*)((uint32_t)seg << 4); - memcpy(info, lowbuf, sizeof info); + + regs.eax = 0x4f01; + regs.ecx = mode; + regs.es = seg; + dpmi_int(0x10, ®s); + + if((regs.eax & 0xffff) != 0x4f) { + fprintf(stderr, "vbe_mode_info (4f01) failed\n"); + dpmi_free(sel); + return -1; + } + + memcpy(minf, lowbuf, sizeof *minf); dpmi_free(sel); return 0; } + +void vbe_print_info(FILE *fp, struct vbe_info *vinf) +{ + fprintf(fp, "vbe version: %u.%u\n", VBE_VER_MAJOR(vinf->ver), VBE_VER_MINOR(vinf->ver)); + if(VBE_VER_MAJOR(vinf->ver) >= 2) { + fprintf(fp, "%s - %s (%s)\n", vinf->vendor, vinf->product, vinf->revstr); + if(vinf->caps & VBE_ACCEL) { + fprintf(fp, "vbe/af %d.%d\n", VBE_VER_MAJOR(vinf->accel_ver), VBE_VER_MINOR(vinf->accel_ver)); + } + } else { + fprintf(fp, "oem: %s\n", vinf->oem_name); + } + fprintf(fp, "video memory: %dkb\n", vinf->vmem_blk * 64); + + if(vinf->caps) { + fprintf(fp, "caps:"); + if(vinf->caps & VBE_8BIT_DAC) fprintf(fp, " dac8"); + if(vinf->caps & VBE_NON_VGA) fprintf(fp, " non-vga"); + if(vinf->caps & VBE_DAC_BLANK) fprintf(fp, " dac-blank"); + if(vinf->caps & VBE_ACCEL) fprintf(fp, " af"); + if(vinf->caps & VBE_MUSTLOCK) fprintf(fp, " af-lock"); + if(vinf->caps & VBE_HWCURSOR) fprintf(fp, " af-curs"); + if(vinf->caps & VBE_HWCLIP) fprintf(fp, " af-clip"); + if(vinf->caps & VBE_TRANSP_BLT) fprintf(fp, " af-tblt"); + fprintf(fp, "\n"); + } + + fprintf(fp, "%d video modes available\n", NMODES(vinf)); + if(vinf->caps & VBE_ACCEL) { + fprintf(fp, "%d accelerated (VBE/AF) modes available\n", NACCMODES(vinf)); + } + fflush(fp); +} + +void vbe_print_mode_info(FILE *fp, struct vbe_mode_info *minf) +{ + fprintf(fp, "%dx%d %dbpp", minf->xres, minf->yres, minf->bpp); + + switch(minf->mem_model) { + case VBE_TYPE_DIRECT: + fprintf(fp, " (rgb"); + if(0) { + case VBE_TYPE_YUV: + fprintf(fp, " (yuv"); + } + fprintf(fp, " %d%d%d)", minf->rsize, minf->gsize, minf->bsize); + break; + case VBE_TYPE_PLANAR: + fprintf(fp, " (%d planes)", minf->num_planes); + break; + case VBE_TYPE_PACKED: + fprintf(fp, " (packed)"); + break; + case VBE_TYPE_TEXT: + fprintf(fp, " (%dx%d cells)", minf->xcharsz, minf->ycharsz); + break; + case VBE_TYPE_CGA: + fprintf(fp, " (CGA)"); + break; + case VBE_TYPE_UNCHAIN: + fprintf(fp, " (unchained-%d)", minf->num_planes); + break; + } + fprintf(fp, " %dpg", minf->num_img_pages); + + if(minf->attr & VBE_ATTR_LFB) { + fprintf(fp, " lfb@%lx", (unsigned long)minf->fb_addr); + } + + fprintf(fp, " ["); + if(minf->attr & VBE_ATTR_AVAIL) fprintf(fp, " avail"); + if(minf->attr & VBE_ATTR_OPTINFO) fprintf(fp, " opt"); + if(minf->attr & VBE_ATTR_TTY) fprintf(fp, " tty"); + if(minf->attr & VBE_ATTR_COLOR) fprintf(fp, " color"); + if(minf->attr & VBE_ATTR_GFX) fprintf(fp, " gfx"); + if(minf->attr & VBE_ATTR_NOTVGA) fprintf(fp, " non-vga"); + if(minf->attr & VBE_ATTR_BANKED) fprintf(fp, " banked"); + if(minf->attr & VBE_ATTR_LFB) fprintf(fp, " lfb"); + if(minf->attr & VBE_ATTR_2XSCAN) fprintf(fp, " dblscan"); + if(minf->attr & VBE_ATTR_ILACE) fprintf(fp, " ilace"); + if(minf->attr & VBE_ATTR_TRIPLEBUF) fprintf(fp, " trplbuf"); + if(minf->attr & VBE_ATTR_STEREO) fprintf(fp, " stereo"); + if(minf->attr & VBE_ATTR_STEREO_2FB) fprintf(fp, " stdual"); + fprintf(fp, " ]\n"); + fflush(fp); +} diff --git a/src/dos/vbe.h b/src/dos/vbe.h index 73df02f..734f94d 100644 --- a/src/dos/vbe.h +++ b/src/dos/vbe.h @@ -1,6 +1,7 @@ #ifndef VBE_H_ #define VBE_H_ +#include #include "inttypes.h" #include "util.h" @@ -11,12 +12,59 @@ struct vbe_info { char *oem_name; uint32_t caps; uint16_t *modes; + uint16_t vmem_blk; /* video memory size in 64k blocks */ uint16_t oem_ver; char *vendor; char *product; char *revstr; uint16_t accel_ver; - uint16_t accel_modes; + uint16_t *accel_modes; + char reserved[216]; + char oem_data[256]; +} PACKED; + +struct vbe_mode_info { + uint16_t attr; + uint8_t wina_attr, winb_attr; + uint16_t win_gran, win_size; + uint16_t wina_seg, winb_seg; + uint32_t win_func; + uint16_t scanline_bytes; + + /* VBE 1.2 and above */ + uint16_t xres, yres; + uint8_t xcharsz, ycharsz; + uint8_t num_planes; + uint8_t bpp; + uint8_t num_banks; + uint8_t mem_model; + uint8_t bank_size; /* bank size in KB */ + uint8_t num_img_pages; + uint8_t reserved1; + + /* direct color fields */ + uint8_t rsize, rpos; + uint8_t gsize, gpos; + uint8_t bsize, bpos; + uint8_t xsize, xpos; + uint8_t cmode_info; /* direct color mode attributes */ + + /* VBE 2.0 and above */ + uint32_t fb_addr; /* physical address of the linear framebuffer */ + uint32_t os_addr; /* phys. address of off-screen memory */ + uint16_t os_size; /* size in KB of off-screen memory */ + + /* VBE 3.0 and above */ + uint16_t lfb_scanline_bytes; + uint8_t banked_num_img_pages; + uint8_t lfb_num_img_pages; + uint8_t lfb_rsize, lfb_rpos; + uint8_t lfb_gsize, lfb_gpos; + uint8_t lfb_bsize, lfb_bpos; + uint8_t lfb_xsize, lfb_xpos; + uint32_t max_pixel_clock; + + uint8_t reserved2[190]; } PACKED; #pragma pack (pop) @@ -33,6 +81,62 @@ enum { VBE_TRANSP_BLT = 0x80 }; -int vbe_getinfo(struct vbe_info *info); +#define VBE_VER_MAJOR(v) (((v) >> 8) & 0xff) +#define VBE_VER_MINOR(v) ((v) & 0xff) + +/* VBE mode attribute flags (vbe_mode_info.attr) */ +enum { + VBE_ATTR_AVAIL = 0x0001, + VBE_ATTR_OPTINFO = 0x0002, + VBE_ATTR_TTY = 0x0004, + VBE_ATTR_COLOR = 0x0008, + VBE_ATTR_GFX = 0x0010, + /* VBE 2.0 */ + VBE_ATTR_NOTVGA = 0x0020, + VBE_ATTR_BANKED = 0x0040, + VBE_ATTR_LFB = 0x0080, + VBE_ATTR_2XSCAN = 0x0100, + /* VBE 3.0 */ + VBE_ATTR_ILACE = 0x0200, /* ! */ + VBE_ATTR_TRIPLEBUF = 0x0400, + VBE_ATTR_STEREO = 0x0800, + VBE_ATTR_STEREO_2FB = 0x1000, + /* VBE/AF */ + VBE_ATTR_MUSTLOCK = 0x0200, /* ! */ +}; + +/* VBE memory model type (vbe_mode_info.mem_model) */ +enum { + VBE_TYPE_TEXT, + VBE_TYPE_CGA, + VBE_TYPE_HERCULES, + VBE_TYPE_PLANAR, + VBE_TYPE_PACKED, + VBE_TYPE_UNCHAIN, + VBE_TYPE_DIRECT, + VBE_TYPE_YUV +}; + +/* VBE window attribute (vbe_mode_info.win(a|b)_attr) */ +enum { + VBE_WIN_AVAIL = 0x01, + VBE_WIN_RD = 0x02, + VBE_WIN_WR = 0x04 +}; + +/* mode number flags */ +enum { + VBE_MODE_RATE = 0x0800, /* VBE 3.0+ user-specified refresh rate */ + VBE_MODE_ACCEL = 0x2000, /* VBE/AF */ + VBE_MODE_LFB = 0x4000, /* VBE 2.0+ */ + VBE_MODE_PRESERVE = 0x8000 +}; + +int vbe_info(struct vbe_info *info); +int vbe_num_modes(struct vbe_info *info); +int vbe_mode_info(int mode, struct vbe_mode_info *minf); + +void vbe_print_info(FILE *fp, struct vbe_info *info); +void vbe_print_mode_info(FILE *fp, struct vbe_mode_info *minf); #endif /* VBE_H_ */ -- 1.7.10.4 From 282021dce00ae9430184cb033c1e49ba5aa132a1 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Thu, 14 Nov 2019 13:15:58 +0200 Subject: [PATCH 02/16] setmode, crtc, list of standard modes --- src/dos/vbe.c | 44 +++++++++++++++++++++++++++++++++++++++- src/dos/vbe.h | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 104 insertions(+), 3 deletions(-) diff --git a/src/dos/vbe.c b/src/dos/vbe.c index 6225084..72f4b51 100644 --- a/src/dos/vbe.c +++ b/src/dos/vbe.c @@ -198,7 +198,7 @@ void vbe_print_mode_info(FILE *fp, struct vbe_mode_info *minf) if(minf->attr & VBE_ATTR_NOTVGA) fprintf(fp, " non-vga"); if(minf->attr & VBE_ATTR_BANKED) fprintf(fp, " banked"); if(minf->attr & VBE_ATTR_LFB) fprintf(fp, " lfb"); - if(minf->attr & VBE_ATTR_2XSCAN) fprintf(fp, " dblscan"); + if(minf->attr & VBE_ATTR_DBLSCAN) fprintf(fp, " dblscan"); if(minf->attr & VBE_ATTR_ILACE) fprintf(fp, " ilace"); if(minf->attr & VBE_ATTR_TRIPLEBUF) fprintf(fp, " trplbuf"); if(minf->attr & VBE_ATTR_STEREO) fprintf(fp, " stereo"); @@ -206,3 +206,45 @@ void vbe_print_mode_info(FILE *fp, struct vbe_mode_info *minf) fprintf(fp, " ]\n"); fflush(fp); } + +int vbe_setmode(uint16_t mode) +{ + struct dpmi_regs regs = {0}; + + regs.eax = 0x4f02; + regs.ebx = mode; + dpmi_int(0x10, ®s); + + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + return 0; +} + +int vbe_setmode_crtc(uint16_t mode, struct vbe_crtc_info *crtc) +{ + void *lowbuf; + uint16_t seg, sel; + struct dpmi_regs regs = {0}; + + assert(sizeof *crtc == 59); + + if(!(seg = dpmi_alloc((sizeof *crtc + 15) / 16, &sel))) { + return -1; + } + lowbuf = (void*)((uint32_t)seg << 4); + + memcpy(lowbuf, crtc, sizeof *crtc); + + regs.eax = 0x4f02; + regs.ebx = mode; + regs.es = seg; + dpmi_int(0x10, ®s); + + dpmi_free(sel); + + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + return 0; +} diff --git a/src/dos/vbe.h b/src/dos/vbe.h index 734f94d..1236b28 100644 --- a/src/dos/vbe.h +++ b/src/dos/vbe.h @@ -64,7 +64,16 @@ struct vbe_mode_info { uint8_t lfb_xsize, lfb_xpos; uint32_t max_pixel_clock; - uint8_t reserved2[190]; + char reserved2[190]; +} PACKED; + +struct vbe_crtc_info { + uint16_t htotal, hsync_start, hsync_end; + uint16_t vtotal, vsync_start, vsync_end; + uint8_t flags; + uint32_t pixel_clock; + uint16_t rate_centihz; /* refresh rate in 1/100 hz (pck / (htotal * vtotal)) */ + char reserved[40]; } PACKED; #pragma pack (pop) @@ -95,7 +104,7 @@ enum { VBE_ATTR_NOTVGA = 0x0020, VBE_ATTR_BANKED = 0x0040, VBE_ATTR_LFB = 0x0080, - VBE_ATTR_2XSCAN = 0x0100, + VBE_ATTR_DBLSCAN = 0x0100, /* VBE 3.0 */ VBE_ATTR_ILACE = 0x0200, /* ! */ VBE_ATTR_TRIPLEBUF = 0x0400, @@ -132,6 +141,53 @@ enum { VBE_MODE_PRESERVE = 0x8000 }; +/* standard mode numbers */ +enum { + VBE_640X400_8BPP = 0x100, + VBE_640X480_8BPP = 0x101, + VBE_800X600_4BPP = 0x102, + VBE_800X600_8BPP = 0x103, + VBE_1024X768_4BPP = 0x104, + VBE_1024X768_8BPP = 0x105, + VBE_1280X1024_4BPP = 0x106, + VBE_1280X1024_8BPP = 0x107, + VBE_80X60_TEXT = 0x108, + VBE_132X25_TEXT = 0x109, + VBE_132X43_TEXT = 0x10a, + VBE_132X50_TEXT = 0x10b, + VBE_132X60_TEXT = 0x10c, + /* VBE 1.2 */ + VBE_320X200_15BPP = 0x10d, + VBE_320X200_16BPP = 0x10e, + VBE_320X200_24BPP = 0x10f, + VBE_640X480_15BPP = 0x110, + VBE_640X480_16BPP = 0x111, + VBE_640X480_24BPP = 0x112, + VBE_800X600_15BPP = 0x113, + VBE_800X600_16BPP = 0x114, + VBE_800X600_24BPP = 0x115, + VBE_1024X768_15BPP = 0x116, + VBE_1024X768_16BPP = 0x117, + VBE_1024X768_24BPP = 0x118, + VBE_1280X1024_15BPP = 0x119, + VBE_1280X1024_16BPP = 0x11a, + VBE_1280X1024_24BPP = 0x11b, + /* VBE 2.0 */ + VBE_1600X1200_8BPP = 0x120, + VBE_1600X1200_15BPP = 0x121, + VBE_1600X1200_16BPP = 0x122, + + VBE_VMEM_MODE = 0x81ff +}; + +/* VBE CRTC flags (vbe_crtc_info.flags) */ +enum { + VBE_CRTC_DBLSCAN = 0x01, + VBE_CRTC_ILACE = 0x02, + VBE_CRTC_HSYNC_NEG = 0x04, + VBE_CRTC_VSYNC_NEG = 0x08 +}; + int vbe_info(struct vbe_info *info); int vbe_num_modes(struct vbe_info *info); int vbe_mode_info(int mode, struct vbe_mode_info *minf); @@ -139,4 +195,7 @@ int vbe_mode_info(int mode, struct vbe_mode_info *minf); void vbe_print_info(FILE *fp, struct vbe_info *info); void vbe_print_mode_info(FILE *fp, struct vbe_mode_info *minf); +int vbe_setmode(uint16_t mode); +int vbe_setmode_crtc(uint16_t mode, struct vbe_crtc_info *crtc); + #endif /* VBE_H_ */ -- 1.7.10.4 From 57348c2e13f4de9e49f8428b9fec3f47f863a257 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Fri, 15 Nov 2019 04:57:54 +0200 Subject: [PATCH 03/16] more vbe --- src/3dgfx.c | 15 ++-- src/dos/vbe.c | 253 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/dos/vbe.h | 41 ++++++++++ 3 files changed, 302 insertions(+), 7 deletions(-) diff --git a/src/3dgfx.c b/src/3dgfx.c index fb24c43..6737094 100644 --- a/src/3dgfx.c +++ b/src/3dgfx.c @@ -586,21 +586,22 @@ void g3d_normal(float x, float y, float z) } #define CLAMP(x, a, b) ((x) < (a) ? (a) : ((x) > (b) ? (b) : (x))) +#define MIN(a, b) ((a) < (b) ? (a) : (b)) void g3d_color3b(unsigned char r, unsigned char g, unsigned char b) { - st->imm_curv.r = CLAMP(r, 0, 255); - st->imm_curv.g = CLAMP(g, 0, 255); - st->imm_curv.b = CLAMP(b, 0, 255); + st->imm_curv.r = MIN(r, 255); + st->imm_curv.g = MIN(g, 255); + st->imm_curv.b = MIN(b, 255); st->imm_curv.a = 255; } void g3d_color4b(unsigned char r, unsigned char g, unsigned char b, unsigned char a) { - st->imm_curv.r = CLAMP(r, 0, 255); - st->imm_curv.g = CLAMP(g, 0, 255); - st->imm_curv.b = CLAMP(b, 0, 255); - st->imm_curv.a = CLAMP(a, 0, 255); + st->imm_curv.r = MIN(r, 255); + st->imm_curv.g = MIN(g, 255); + st->imm_curv.b = MIN(b, 255); + st->imm_curv.a = MIN(a, 255); } void g3d_color3f(float r, float g, float b) diff --git a/src/dos/vbe.c b/src/dos/vbe.c index 72f4b51..f4fabdf 100644 --- a/src/dos/vbe.c +++ b/src/dos/vbe.c @@ -23,6 +23,10 @@ #define NMODES(inf) *(uint16_t*)((inf)->sig) #define NACCMODES(inf) *(uint16_t*)((inf)->sig + 2) +static int cur_pitch; +/* TODO update cur_pitch on mode-change and on setscanlen */ + + int vbe_info(struct vbe_info *info) { int i, num; @@ -248,3 +252,252 @@ int vbe_setmode_crtc(uint16_t mode, struct vbe_crtc_info *crtc) } return 0; } + +int vbe_getmode(void) +{ + struct dpmi_regs regs = {0}; + + regs.eax = 0x4f03; + dpmi_int(0x10, ®s); + + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + return regs.ebx & 0xffff; +} + +int vbe_state_size(unsigned int flags) +{ + struct dpmi_regs regs = {0}; + + regs.eax = 0x4f04; + regs.edx = 0; + regs.ecx = flags; + dpmi_int(0x10, ®s); + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + return (regs.ebx & 0xffff) * 64; +} + +int vbe_save(void *stbuf, int sz, unsigned int flags) +{ + void *lowbuf; + uint16_t seg, sel; + struct dpmi_regs regs = {0}; + + if(!(seg = dpmi_alloc((sz + 15) / 16, &sel))) { + return -1; + } + lowbuf = (void*)((uint32_t)seg << 4); + + regs.eax = 0x4f04; + regs.edx = 1; /* save */ + regs.ecx = flags; + regs.es = seg; + dpmi_int(0x10, ®s); + if((regs.eax & 0xffff) != 0x4f) { + dpmi_free(sel); + return -1; + } + + memcpy(stbuf, lowbuf, sz); + dpmi_free(sel); + return 0; +} + +int vbe_restore(void *stbuf, int sz, unsigned int flags) +{ + void *lowbuf; + uint16_t seg, sel; + struct dpmi_regs regs = {0}; + + if(!(seg = dpmi_alloc((sz + 15) / 16, &sel))) { + return -1; + } + lowbuf = (void*)((uint32_t)seg << 4); + + memcpy(lowbuf, stbuf, sz); + + regs.eax = 0x4f04; + regs.edx = 2; /* restore */ + regs.ecx = flags; + regs.es = seg; + dpmi_int(0x10, ®s); + dpmi_free(sel); + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + return 0; +} + +int vbe_setwin(int wid, int pos) +{ + struct dpmi_regs regs; + + if(wid & ~1) return -1; + + regs.eax = 0x4f05; + regs.ebx = wid; + regs.edx = pos; + dpmi_int(0x10, ®s); + + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + return 0; +} + +int vbe_getwin(int wid) +{ + struct dpmi_regs regs; + + if(wid & ~1) return -1; + + regs.eax = 0x4f05; + regs.ebx = wid; + dpmi_int(0x10, ®s); + + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + + return regs.edx & 0xffff; +} + +int vbe_setscanlen(int len_pix) +{ + struct dpmi_regs regs; + + regs.eax = 0x4f06; + regs.ebx = 0; /* set scanline length in pixels */ + regs.ecx = len_pix; + dpmi_int(0x10, ®s); + + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + + return regs.ecx; +} + +int vbe_getscanlen(void) +{ + struct dpmi_regs regs; + + regs.eax = 0x4f06; + regs.ebx = 1; /* get scanline length */ + dpmi_int(0x10, ®s); + + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + return regs.ecx; +} + +int vbe_getpitch(void) +{ + struct dpmi_regs regs; + + regs.eax = 0x4f06; + regs.ebx = 1; /* get scanline length */ + dpmi_int(0x10, ®s); + + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + return regs.ebx; +} + +int vbe_scanline_info(struct vbe_scanline_info *sinf) +{ + struct dpmi_regs regs; + + regs.eax = 0x4f06; + regs.ebx = 1; /* get scanline length */ + dpmi_int(0x10, ®s); + + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + + sinf->size = regs.ebx & 0xffff; + sinf->num_pixels = regs.ecx & 0xffff; + sinf->max_scanlines = regs.edx & 0xffff; + return 0; +} + +enum { + SDISP_SET = 0x00, + SDISP_GET = 0x01, + SDISP_ALTSET = 0x02, + SDISP_SET_STEREO = 0x03, + SDISP_GETSCHED = 0x04, + SDISP_STEREO_ON = 0x05, + SDISP_STEREO_OFF = 0x06, + SDISP_SET_VBLANK = 0x80, + SDISP_ALTSET_VBLANK = 0x82, + SDISP_SET_STEREO_VBLANK = 0x83 +}; + +int vbe_setdisp(int x, int y, int when) +{ + struct dpmi_regs regs; + + regs.eax = 0x4f07; + regs.ebx = (when == VBE_SWAP_VBLANK) ? SDISP_SET_VBLANK : SDISP_SET; + regs.ecx = x; + regs.edx = y; + dpmi_int(0x10, ®s); + + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + return 0; +} + +int vbe_swap(uint32_t voffs, int when) +{ + struct dpmi_regs regs; + int op; + + switch(when) { + case VBE_SWAP_ASYNC: + op = SDISP_ALTSET; + break; + + case VBE_SWAP_NOW: + /* XXX is this the only way? */ + return vbe_setdisp(voffs % cur_pitch, voffs / cur_pitch, when); + + case VBE_SWAP_VBLANK: + default: + op = SDISP_ALTSET_VBLANK; + break; + } + + + regs.eax = 0x4f07; + regs.ebx = op; + regs.ecx = voffs; + dpmi_int(0x10, ®s); + + if((regs.eax & 0xffff) != 0x4f) { + return -1; + } + return 0; +} + +int vbe_swap_pending(void) +{ + struct dpmi_regs regs; + + regs.eax = 0x4f07; + regs.ebx = SDISP_GETSCHED; + dpmi_int(0x10, ®s); + + if((regs.eax & 0xffff) != 0x4f) { + return 0; + } + return regs.ecx; +} diff --git a/src/dos/vbe.h b/src/dos/vbe.h index 1236b28..84044e3 100644 --- a/src/dos/vbe.h +++ b/src/dos/vbe.h @@ -77,6 +77,13 @@ struct vbe_crtc_info { } PACKED; #pragma pack (pop) +/* returned by vbe_scanline_info() */ +struct vbe_scanline_info { + int size; + int num_pixels; + int max_scanlines; +}; + enum { VBE_8BIT_DAC = 0x01, VBE_NON_VGA = 0x02, @@ -188,6 +195,21 @@ enum { VBE_CRTC_VSYNC_NEG = 0x08 }; +enum { + VBE_STATE_CTRLHW = 0x01, + VBE_STATE_BIOS = 0x02, + VBE_STATE_DAC = 0x04, + VBE_STATE_REGS = 0x08, + + VBE_STATE_ALL = 0xffff +}; + +enum { + VBE_SWAP_NOW, + VBE_SWAP_VBLANK, + VBE_SWAP_ASYNC /* schedule swap and return (triple-buffering) */ +}; + int vbe_info(struct vbe_info *info); int vbe_num_modes(struct vbe_info *info); int vbe_mode_info(int mode, struct vbe_mode_info *minf); @@ -197,5 +219,24 @@ void vbe_print_mode_info(FILE *fp, struct vbe_mode_info *minf); int vbe_setmode(uint16_t mode); int vbe_setmode_crtc(uint16_t mode, struct vbe_crtc_info *crtc); +int vbe_getmode(void); + +int vbe_state_size(unsigned int flags); +int vbe_save(void *stbuf, int sz, unsigned int flags); +int vbe_restore(void *stbuf, int sz, unsigned int flags); + +int vbe_setwin(int wid, int pos); +int vbe_getwin(int wid); + +/* returns the actual length in pixels, which might not be what was requested */ +int vbe_setscanlen(int len_pix); +int vbe_getscanlen(void); +int vbe_getpitch(void); +int vbe_scanline_info(struct vbe_scanline_info *sinf); + +int vbe_setdisp(int x, int y, int when); +int vbe_swap(uint32_t voffs, int when); +int vbe_swap_pending(void); /* 0: not pending (done) or error, 1: pending swap */ +/* TODO add stereo swap */ #endif /* VBE_H_ */ -- 1.7.10.4 From acf706a52fdef3bea3f4ae07b7797395f854c11e Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Mon, 18 Nov 2019 17:43:53 +0200 Subject: [PATCH 04/16] adding the previous gfx.h file, will re-write the code --- src/dos/gfx.h | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 src/dos/gfx.h diff --git a/src/dos/gfx.h b/src/dos/gfx.h new file mode 100644 index 0000000..109bbcf --- /dev/null +++ b/src/dos/gfx.h @@ -0,0 +1,60 @@ +#ifndef GFX_H_ +#define GFX_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +void *set_video_mode(int xsz, int ysz, int bpp); +int set_text_mode(void); + +int get_color_depth(void); +int get_color_bits(int *rbits, int *gbits, int *bbits); +int get_color_shift(int *rshift, int *gshift, int *bshift); +int get_color_mask(unsigned int *rmask, unsigned int *gmask, unsigned int *bmask); + +void set_palette(int idx, int r, int g, int b); + +enum { + FLIP_NOW, + FLIP_VBLANK, + FLIP_VBLANK_WAIT +}; +/* page flip and return pointer to the start of the display area (front buffer) */ +void *page_flip(int vsync); + +#ifdef __WATCOMC__ +void wait_vsync(void); +#pragma aux wait_vsync = \ + "mov dx, 0x3da" \ + "l1:" \ + "in al, dx" \ + "and al, 0x8" \ + "jnz l1" \ + "l2:" \ + "in al, dx" \ + "and al, 0x8" \ + "jz l2" \ + modify[al dx]; +#endif + +#ifdef __DJGPP__ +#define wait_vsync() asm volatile ( \ + "mov $0x3da, %%dx\n\t" \ + "0:\n\t" \ + "in %%dx, %%al\n\t" \ + "and $8, %%al\n\t" \ + "jnz 0b\n\t" \ + "0:\n\t" \ + "in %%dx, %%al\n\t" \ + "and $8, %%al\n\t" \ + "jz 0b\n\t" \ + :::"%eax","%edx") +#endif + + +#ifdef __cplusplus +} +#endif + +#endif /* GFX_H_ */ -- 1.7.10.4 From b82bab85314bbc57d1c542d4d6687de0cd75c375 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Mon, 2 Dec 2019 13:19:51 +0200 Subject: [PATCH 05/16] the rewrite branch builds, not tested yet --- Makefile | 2 +- src/dos/gfx.c | 121 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/dos/gfx.h | 1 - src/dos/main.c | 2 +- src/dos/vga.c | 11 ++++++ src/dos/vga.h | 30 ++++++++++++++ 6 files changed, 164 insertions(+), 3 deletions(-) create mode 100644 src/dos/gfx.c create mode 100644 src/dos/vga.c create mode 100644 src/dos/vga.h diff --git a/Makefile b/Makefile index 863858d..8853b06 100644 --- a/Makefile +++ b/Makefile @@ -3,7 +3,7 @@ fract.obj gfx.obj gfxutil.obj greets.obj grise.obj hairball.obj infcubes.obj & keyb.obj logger.obj main.obj mesh.obj meshload.obj metaball.obj metasurf.obj & mouse.obj music.obj noise.obj plasma.obj polyclip.obj polyfill.obj polytest.obj & rbtree.obj sball.obj screen.obj smoketxt.obj thunder.obj tilemaze.obj timer.obj & -tinyfps.obj treestor.obj ts_text.obj tunnel.obj util.obj vbe.obj watdpmi.obj +tinyfps.obj treestor.obj ts_text.obj tunnel.obj util.obj vbe.obj vga.obj bin = demo.exe diff --git a/src/dos/gfx.c b/src/dos/gfx.c new file mode 100644 index 0000000..b55b4e6 --- /dev/null +++ b/src/dos/gfx.c @@ -0,0 +1,121 @@ +#include +#include "gfx.h" +#include "vbe.h" +#include "vga.h" +#include "cdpmi.h" + +#ifdef __DJGPP__ +#include +#define REALPTR(s, o) (void*)(((uint32_t)(s) << 4) - __djgpp_base_address + ((uint32_t)(o))) +#else +#define REALPTR(s, o) (void*)(((uint32_t)(s) << 4) + ((uint32_t)(o))) +#endif + +#define SAME_BPP(a, b) \ + ((a) == (b) || ((a) == 16 && (b) == 15) || ((a) == 15 && (b) == 16) || \ + ((a) == 32 && (b) == 24) || ((a) == 24 && (b) == 32)) + +static int vbe_init_ver; +static struct vbe_info vbe; +static int mode, pgsize, fbsize; +static struct vbe_mode_info mode_info; + +static void *vpgaddr[2]; +static int fbidx; + +static int init_vbe(void) +{ + if(vbe_info(&vbe) == -1) { + return -1; + } + + vbe_print_info(stdout, &vbe); + fflush(stdout); + + vbe_init_ver = VBE_VER_MAJOR(vbe.ver); + return 0; +} + +void *set_video_mode(int xsz, int ysz, int bpp) +{ + int i, nmodes; + int best_match_mode = -1; + struct vbe_mode_info minf; + + if(!vbe_init_ver) { + if(init_vbe() == -1) { + fprintf(stderr, "failed to initialize VBE\n"); + return 0; + } + if(vbe_init_ver < 2) { + fprintf(stderr, "VBE >= 2.0 required\n"); + return 0; + } + } + + mode = -1; + + for(i=0; i 1) { + vpgaddr[1] = (char*)vpgaddr[0] + pgsize; + fbidx = 1; + page_flip(FLIP_NOW); /* start with the second page visible */ + } else { + fbidx = 0; + vpgaddr[1] = 0; + } + + return vpgaddr[0]; +} + +int set_text_mode(void) +{ + vga_setmode(3); + return 0; +} + +void *page_flip(int vsync) +{ + if(!vpgaddr[1]) { + /* page flipping not supported */ + return vpgaddr[0]; + } + + vbe_swap(fbidx ? pgsize : 0, vsync ? VBE_SWAP_VBLANK : VBE_SWAP_NOW); + fbidx = (fbidx + 1) & 1; + + return vpgaddr[fbidx]; +} diff --git a/src/dos/gfx.h b/src/dos/gfx.h index 109bbcf..029066f 100644 --- a/src/dos/gfx.h +++ b/src/dos/gfx.h @@ -18,7 +18,6 @@ void set_palette(int idx, int r, int g, int b); enum { FLIP_NOW, FLIP_VBLANK, - FLIP_VBLANK_WAIT }; /* page flip and return pointer to the start of the display area (front buffer) */ void *page_flip(int vsync); diff --git a/src/dos/main.c b/src/dos/main.c index aed4e8a..0f8abf5 100644 --- a/src/dos/main.c +++ b/src/dos/main.c @@ -132,7 +132,7 @@ void swap_buffers(void *pixels) void *next; drawFps(vmem_back); - if((next = page_flip(opt.vsync ? FLIP_VBLANK_WAIT : FLIP_NOW))) { + if((next = page_flip(opt.vsync ? FLIP_VBLANK : FLIP_NOW))) { assert(next == vmem_back); vmem_back = vmem_front; vmem_front = next; diff --git a/src/dos/vga.c b/src/dos/vga.c new file mode 100644 index 0000000..c829684 --- /dev/null +++ b/src/dos/vga.c @@ -0,0 +1,11 @@ +#include "vga.h" +#include "cdpmi.h" + +int vga_setmode(int mode) +{ + struct dpmi_regs regs = {0}; + + regs.eax = mode; /* func 00 | mode */ + dpmi_int(0x10, ®s); + return 0; +} diff --git a/src/dos/vga.h b/src/dos/vga.h new file mode 100644 index 0000000..c6d7070 --- /dev/null +++ b/src/dos/vga.h @@ -0,0 +1,30 @@ +#ifndef VGA_H_ +#define VGA_H_ + +#include "inttypes.h" + +int vga_setmode(int mode); + +#ifdef __WATCOMC__ +void vga_setpal(int16_t idx, uint8_t r, uint8_t g, uint8_t b); +#pragma aux vga_setpal = \ + "test ax, 0x8000" \ + "jnz skip_dacaddr" \ + "mov dx, 0x3c8" \ + "out dx, al" \ + "skip_dacaddr:" \ + "mov dx, 0x3c9" \ + "mov al, bl" \ + "shr al, 2" \ + "out dx, al" \ + "mov al, bh" \ + "shr al, 2" \ + "out dx, al" \ + "mov al, cl" \ + "shr al, 2" \ + "out dx, al" \ + parm[ax][bl][bh][cl] \ + modify[dx]; +#endif /* __WATCOMC__ */ + +#endif /* VGA_H_ */ -- 1.7.10.4 From 7deef4d5a20da09044bf7311c6ee274090cde5e6 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Mon, 2 Dec 2019 23:01:12 +0200 Subject: [PATCH 06/16] foo --- Makefile | 63 -------------------------------------------------- libs/cgmath/cgmath.h | 4 ++++ src/bump.c | 2 +- src/demo.c | 4 ++-- src/demo.h | 9 ++------ src/dos/gfx.c | 2 +- src/dos/main.c | 42 ++++++++------------------------- src/fract.c | 6 ++--- src/grise.c | 2 +- src/plasma.c | 2 +- src/sdl/main.c | 2 +- src/thunder.c | 2 +- src/treestor.c | 2 +- src/tunnel.c | 4 ++-- 14 files changed, 30 insertions(+), 116 deletions(-) delete mode 100644 Makefile diff --git a/Makefile b/Makefile deleted file mode 100644 index 8853b06..0000000 --- a/Makefile +++ /dev/null @@ -1,63 +0,0 @@ -obj = 3dgfx.obj bsptree.obj bump.obj cfgopt.obj demo.obj djdpmi.obj dynarr.obj & -fract.obj gfx.obj gfxutil.obj greets.obj grise.obj hairball.obj infcubes.obj & -keyb.obj logger.obj main.obj mesh.obj meshload.obj metaball.obj metasurf.obj & -mouse.obj music.obj noise.obj plasma.obj polyclip.obj polyfill.obj polytest.obj & -rbtree.obj sball.obj screen.obj smoketxt.obj thunder.obj tilemaze.obj timer.obj & -tinyfps.obj treestor.obj ts_text.obj tunnel.obj util.obj vbe.obj vga.obj - -bin = demo.exe - -libs = imago.lib anim.lib - -def = -dM_PI=3.141592653589793 -opt = -5 -fp5 -otexan -oh -oi -ei -dbg = -d1 - -!ifdef __UNIX__ -incpath = -Isrc -Isrc/dos -Ilibs -Ilibs/imago/src -Ilibs/anim/src -libpath = libpath libs/imago libpath libs/anim -RM = rm -f -!else -incpath = -Isrc -Isrc\dos -Ilibs -Ilibs\imago\src -Ilibs\anim\src -libpath = libpath libs\imago libpath libs\anim -RM = del -!endif - -AS = nasm -CC = wcc386 -CXX = wpp386 -ASFLAGS = -fobj -CFLAGS = $(dbg) $(opt) $(def) -zq -bt=dos $(incpath) -CXXFLAGS = $(CFLAGS) -LDFLAGS = option stack=16k option map $(libpath) library { $(libs) } -LD = wlink - -$(bin): cflags.occ $(obj) libs/imago/imago.lib - %write objects.lnk $(obj) - %write ldflags.lnk $(LDFLAGS) - $(LD) debug all name $@ system dos4g file { @objects } @ldflags - -.c: src;src/dos -.cc: src;src/dos -.asm: src;src/dos - -cflags.occ: Makefile - %write $@ $(CFLAGS) - -cxxflags.occ: Makefile - %write $@ $(CXXFLAGS) - -.c.obj: .autodepend - $(CC) -fo=$@ @cflags.occ $[* - -.cc.obj: .autodepend - $(CXX) -fo=$@ @cxxflags.occ $[* - -.asm.obj: - $(AS) $(ASFLAGS) -o $@ $[*.asm - -clean: .symbolic - $(RM) *.obj - $(RM) *.occ - $(RM) *.lnk - $(RM) $(bin) diff --git a/libs/cgmath/cgmath.h b/libs/cgmath/cgmath.h index e660437..8e6871d 100644 --- a/libs/cgmath/cgmath.h +++ b/libs/cgmath/cgmath.h @@ -26,6 +26,10 @@ #include #include +#ifdef __WATCOMC__ +#define inline __inline +#endif + typedef struct { float x, y, z; } cgm_vec3; diff --git a/src/bump.c b/src/bump.c index 0717aed..b82594b 100644 --- a/src/bump.c +++ b/src/bump.c @@ -322,7 +322,7 @@ static void draw(void) animateParticles(); renderParticles(); - renderBump((unsigned short*)vmem_back); + renderBump((unsigned short*)fb_pixels); swap_buffers(0); } diff --git a/src/demo.c b/src/demo.c index 168a544..a990d5f 100644 --- a/src/demo.c +++ b/src/demo.c @@ -19,7 +19,7 @@ int fb_width = FB_WIDTH; int fb_height = FB_HEIGHT; int fb_bpp = 16; -uint16_t *fb_pixels, *vmem_back, *vmem_front; +uint16_t *fb_pixels, *vmem; unsigned long time_msec; int mouse_x, mouse_y; unsigned int mouse_bmask; @@ -102,7 +102,7 @@ void demo_draw(void) scr_update(); scr_draw(); - draw_mouse_pointer(vmem_front); + draw_mouse_pointer(vmem); ++nframes; } diff --git a/src/demo.h b/src/demo.h index bf3eaa6..b55ad4d 100644 --- a/src/demo.h +++ b/src/demo.h @@ -5,9 +5,7 @@ extern int fb_width, fb_height, fb_bpp; extern uint16_t *fb_pixels; /* system-RAM pixel buffer: use swap_buffers(fb_pixels) */ -/* video memory pointers. might both point to the front buffer if there is not - * enough memory for page flipping. use swap_buffers(0) to flip. */ -extern uint16_t *vmem_back, *vmem_front; +extern uint16_t *vmem; /* visible video memory pointer */ extern unsigned long time_msec; extern int mouse_x, mouse_y; @@ -34,10 +32,7 @@ void demo_quit(void); unsigned long get_msec(void); void set_palette(int idx, int r, int g, int b); -/* pass 0 to just swap vmem_back/vmem_front with page flipping - * pass a pointer to a system-ram pixel buffer to copy it to vmem_front, - * instead of flipping. - */ +/* if pixels is 0, it defaults to fb_pixels */ void swap_buffers(void *pixels); /* call each frame to get 3D viewing spherical coordinates */ diff --git a/src/dos/gfx.c b/src/dos/gfx.c index b55b4e6..b5670bf 100644 --- a/src/dos/gfx.c +++ b/src/dos/gfx.c @@ -54,7 +54,7 @@ void *set_video_mode(int xsz, int ysz, int bpp) } mode = -1; - + nmodes = vbe_num_modes(&vbe); for(i=0; i Date: Tue, 3 Dec 2019 00:58:20 +0200 Subject: [PATCH 07/16] accidentally removed the watcom makefile --- Makefile | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Makefile diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..8853b06 --- /dev/null +++ b/Makefile @@ -0,0 +1,63 @@ +obj = 3dgfx.obj bsptree.obj bump.obj cfgopt.obj demo.obj djdpmi.obj dynarr.obj & +fract.obj gfx.obj gfxutil.obj greets.obj grise.obj hairball.obj infcubes.obj & +keyb.obj logger.obj main.obj mesh.obj meshload.obj metaball.obj metasurf.obj & +mouse.obj music.obj noise.obj plasma.obj polyclip.obj polyfill.obj polytest.obj & +rbtree.obj sball.obj screen.obj smoketxt.obj thunder.obj tilemaze.obj timer.obj & +tinyfps.obj treestor.obj ts_text.obj tunnel.obj util.obj vbe.obj vga.obj + +bin = demo.exe + +libs = imago.lib anim.lib + +def = -dM_PI=3.141592653589793 +opt = -5 -fp5 -otexan -oh -oi -ei +dbg = -d1 + +!ifdef __UNIX__ +incpath = -Isrc -Isrc/dos -Ilibs -Ilibs/imago/src -Ilibs/anim/src +libpath = libpath libs/imago libpath libs/anim +RM = rm -f +!else +incpath = -Isrc -Isrc\dos -Ilibs -Ilibs\imago\src -Ilibs\anim\src +libpath = libpath libs\imago libpath libs\anim +RM = del +!endif + +AS = nasm +CC = wcc386 +CXX = wpp386 +ASFLAGS = -fobj +CFLAGS = $(dbg) $(opt) $(def) -zq -bt=dos $(incpath) +CXXFLAGS = $(CFLAGS) +LDFLAGS = option stack=16k option map $(libpath) library { $(libs) } +LD = wlink + +$(bin): cflags.occ $(obj) libs/imago/imago.lib + %write objects.lnk $(obj) + %write ldflags.lnk $(LDFLAGS) + $(LD) debug all name $@ system dos4g file { @objects } @ldflags + +.c: src;src/dos +.cc: src;src/dos +.asm: src;src/dos + +cflags.occ: Makefile + %write $@ $(CFLAGS) + +cxxflags.occ: Makefile + %write $@ $(CXXFLAGS) + +.c.obj: .autodepend + $(CC) -fo=$@ @cflags.occ $[* + +.cc.obj: .autodepend + $(CXX) -fo=$@ @cxxflags.occ $[* + +.asm.obj: + $(AS) $(ASFLAGS) -o $@ $[*.asm + +clean: .symbolic + $(RM) *.obj + $(RM) *.occ + $(RM) *.lnk + $(RM) $(bin) -- 1.7.10.4 From 8b7d7ca6a99b08200b0e7684c4d8ef3040c46c87 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Tue, 3 Dec 2019 00:58:52 +0200 Subject: [PATCH 08/16] pass -d2 for proper debug symbols --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 8853b06..2faa385 100644 --- a/Makefile +++ b/Makefile @@ -11,7 +11,7 @@ libs = imago.lib anim.lib def = -dM_PI=3.141592653589793 opt = -5 -fp5 -otexan -oh -oi -ei -dbg = -d1 +dbg = -d2 !ifdef __UNIX__ incpath = -Isrc -Isrc/dos -Ilibs -Ilibs/imago/src -Ilibs/anim/src -- 1.7.10.4 From 92bc7be93ea01896b93f2986c6029b5932c32d97 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Thu, 5 Dec 2019 04:03:13 +0200 Subject: [PATCH 09/16] added missing "modify" declarations in cdpmi.h inline assembly blocks --- src/dos/cdpmi.h | 7 ++++--- src/dos/gfx.c | 20 +++++++++++++++++++- 2 files changed, 23 insertions(+), 4 deletions(-) diff --git a/src/dos/cdpmi.h b/src/dos/cdpmi.h index 4fc2c30..92bc5b3 100644 --- a/src/dos/cdpmi.h +++ b/src/dos/cdpmi.h @@ -34,7 +34,8 @@ void dpmi_munmap(void *addr); "xor ax, ax" \ "alloc_skip_err:" \ value[ax] \ - parm[ebx][edi]; + parm[ebx][edi] \ + modify[dx]; #pragma aux dpmi_free = \ "mov ax, 0x101" \ @@ -65,7 +66,7 @@ void dpmi_munmap(void *addr); "mov ax, cx" \ value[eax] \ parm[ebx][esi] \ - modify[cx di]; + modify[bx cx di esi]; #pragma aux dpmi_munmap = \ "mov ax, 0x801" \ @@ -73,7 +74,7 @@ void dpmi_munmap(void *addr); "shr ebx, 16" \ "int 0x31" \ parm[ebx] \ - modify[ax]; + modify[ax cx ebx]; #endif /* __WATCOMC__ */ #ifdef __DJGPP__ diff --git a/src/dos/gfx.c b/src/dos/gfx.c index b5670bf..d0128ee 100644 --- a/src/dos/gfx.c +++ b/src/dos/gfx.c @@ -25,11 +25,25 @@ static int fbidx; static int init_vbe(void) { + int i, num; + if(vbe_info(&vbe) == -1) { + fprintf(stderr, "failed to retrieve VBE information\n"); return -1; } vbe_print_info(stdout, &vbe); + + num = vbe_num_modes(&vbe); + for(i=0; i Date: Fri, 6 Dec 2019 12:33:19 +0200 Subject: [PATCH 10/16] fixed div/0 --- src/dos/vbe.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/src/dos/vbe.c b/src/dos/vbe.c index f4fabdf..fd894fe 100644 --- a/src/dos/vbe.c +++ b/src/dos/vbe.c @@ -222,6 +222,8 @@ int vbe_setmode(uint16_t mode) if((regs.eax & 0xffff) != 0x4f) { return -1; } + + cur_pitch = vbe_getpitch(); return 0; } @@ -250,6 +252,8 @@ int vbe_setmode_crtc(uint16_t mode, struct vbe_crtc_info *crtc) if((regs.eax & 0xffff) != 0x4f) { return -1; } + + cur_pitch = vbe_getpitch(); return 0; } @@ -378,6 +382,7 @@ int vbe_setscanlen(int len_pix) return -1; } + cur_pitch = vbe_getpitch(); return regs.ecx; } @@ -432,8 +437,8 @@ enum { SDISP_GET = 0x01, SDISP_ALTSET = 0x02, SDISP_SET_STEREO = 0x03, - SDISP_GETSCHED = 0x04, - SDISP_STEREO_ON = 0x05, + SDISP_GETSCHED = 0x04, + SDISP_STEREO_ON = 0x05, SDISP_STEREO_OFF = 0x06, SDISP_SET_VBLANK = 0x80, SDISP_ALTSET_VBLANK = 0x82, -- 1.7.10.4 From f8bae6c14df76c506af4474cbf29402d2bfa8209 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Tue, 10 Dec 2019 13:12:16 +0200 Subject: [PATCH 11/16] removed "trying to match" debug prints --- src/dos/gfx.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/src/dos/gfx.c b/src/dos/gfx.c index d0128ee..570eaba 100644 --- a/src/dos/gfx.c +++ b/src/dos/gfx.c @@ -73,8 +73,6 @@ void *set_video_mode(int xsz, int ysz, int bpp) if(vbe_mode_info(vbe.modes[i], &minf) == -1) { continue; } - printf("trying to match mode: %d (%dx%d %dbpp)\n", vbe.modes[i], - minf.xres, minf.yres, minf.bpp); if(minf.xres != xsz || minf.yres != ysz) continue; if(minf.bpp == bpp) { mode = vbe.modes[i]; -- 1.7.10.4 From 772dfe62feafd0583e52326c7419ef01e04cac60 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Fri, 13 Dec 2019 10:47:11 +0200 Subject: [PATCH 12/16] infcubes crashes --- src/dos/gfx.c | 16 +++++++++++----- src/dos/gfx.h | 2 +- src/dos/main.c | 8 +++++--- 3 files changed, 17 insertions(+), 9 deletions(-) diff --git a/src/dos/gfx.c b/src/dos/gfx.c index 570eaba..8818ab9 100644 --- a/src/dos/gfx.c +++ b/src/dos/gfx.c @@ -22,6 +22,7 @@ static struct vbe_mode_info mode_info; static void *vpgaddr[2]; static int fbidx; +static int pgcount; static int init_vbe(void) { @@ -50,7 +51,7 @@ static int init_vbe(void) return 0; } -void *set_video_mode(int xsz, int ysz, int bpp) +void *set_video_mode(int xsz, int ysz, int bpp, int nbuf) { int i, nmodes; int best_match_mode = -1; @@ -70,7 +71,7 @@ void *set_video_mode(int xsz, int ysz, int bpp) mode = -1; nmodes = vbe_num_modes(&vbe); for(i=0; i 2) nbuf = 2; + pgcount = nbuf > mode_info.num_img_pages ? mode_info.num_img_pages : nbuf; + pgsize = mode_info.xres * mode_info.yres * (bpp / 8); - fbsize = mode_info.num_img_pages * pgsize; + fbsize = pgcount * pgsize; vpgaddr[0] = (void*)dpmi_mmap(mode_info.fb_addr, fbsize); + memset(vpgaddr[0], 0xaa, fbsize); - if(mode_info.num_img_pages > 1) { + if(pgcount > 1) { vpgaddr[1] = (char*)vpgaddr[0] + pgsize; fbidx = 1; page_flip(FLIP_NOW); /* start with the second page visible */ diff --git a/src/dos/gfx.h b/src/dos/gfx.h index 029066f..f23e0f6 100644 --- a/src/dos/gfx.h +++ b/src/dos/gfx.h @@ -5,7 +5,7 @@ extern "C" { #endif -void *set_video_mode(int xsz, int ysz, int bpp); +void *set_video_mode(int xsz, int ysz, int bpp, int nbuf); int set_text_mode(void); int get_color_depth(void); diff --git a/src/dos/main.c b/src/dos/main.c index 6d83027..aed12e9 100644 --- a/src/dos/main.c +++ b/src/dos/main.c @@ -31,7 +31,7 @@ static quat_t rot = {0, 0, 0, 1}; int main(int argc, char **argv) { - fbsize = fb_width * fb_height * fb_bpp / CHAR_BIT; + fbsize = fb_width * fb_height * fb_bpp / 8; init_logger("demo.log"); @@ -46,12 +46,14 @@ int main(int argc, char **argv) set_mouse(fb_width / 2, fb_height / 2); } - if(!(fb_pixels = malloc(fbsize))) { + /* allocate a couple extra rows as a guard band, until we fucking fix the rasterizer */ + if(!(fb_pixels = malloc(fbsize + (fb_width * fb_bpp / 8) * 2))) { fprintf(stderr, "failed to allocate backbuffer\n"); return 1; } + fb_pixels += fb_width; - if(!(vmem = set_video_mode(fb_width, fb_height, fb_bpp))) { + if(!(vmem = set_video_mode(fb_width, fb_height, fb_bpp, 1))) { return 1; } -- 1.7.10.4 From 102f82ec5a8128cb076371aa3d9821e684b94380 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Sat, 14 Dec 2019 07:51:54 +0200 Subject: [PATCH 13/16] fixed the physical to virtual translation issues with DJGPP, watcom just doesn't work at the moment, and seems like it hasn't worked for a while and went unnoticed? ... oh well --- Makefile.dj | 2 +- src/dos/cdpmi.h | 12 +++++++++++- src/dos/gfx.c | 8 +------- src/dos/main.c | 5 +++++ src/dos/vbe.c | 12 ++++++------ 5 files changed, 24 insertions(+), 15 deletions(-) diff --git a/Makefile.dj b/Makefile.dj index a687012..fe89fcf 100644 --- a/Makefile.dj +++ b/Makefile.dj @@ -12,7 +12,7 @@ else endif inc = -Isrc -Isrc/dos -Ilibs -Ilibs/imago/src -Ilibs/anim/src -Ilibs/mikmod/include -opt = -O3 -ffast-math -fno-strict-aliasing +#opt = -O3 -ffast-math -fno-strict-aliasing dbg = -g warn = -pedantic -Wall -Wno-unused-function -Wno-unused-variable diff --git a/src/dos/cdpmi.h b/src/dos/cdpmi.h index 92bc5b3..71138b6 100644 --- a/src/dos/cdpmi.h +++ b/src/dos/cdpmi.h @@ -3,7 +3,17 @@ #ifdef __DJGPP__ #include -#endif +#include + +#define virt_to_phys(v) ((v) + __djgpp_base_address) +#define phys_to_virt(p) ((p) - __djgpp_base_address) + +#else /* not djgpp (basically watcom) */ + +#define virt_to_phys(v) (v) +#define phys_to_virt(p) (p) + +#endif /* __DJGPP__ */ #include "inttypes.h" #include "util.h" diff --git a/src/dos/gfx.c b/src/dos/gfx.c index 8818ab9..bc763d3 100644 --- a/src/dos/gfx.c +++ b/src/dos/gfx.c @@ -1,16 +1,10 @@ #include +#include #include "gfx.h" #include "vbe.h" #include "vga.h" #include "cdpmi.h" -#ifdef __DJGPP__ -#include -#define REALPTR(s, o) (void*)(((uint32_t)(s) << 4) - __djgpp_base_address + ((uint32_t)(o))) -#else -#define REALPTR(s, o) (void*)(((uint32_t)(s) << 4) + ((uint32_t)(o))) -#endif - #define SAME_BPP(a, b) \ ((a) == (b) || ((a) == 16 && (b) == 15) || ((a) == 15 && (b) == 16) || \ ((a) == 32 && (b) == 24) || ((a) == 24 && (b) == 32)) diff --git a/src/dos/main.c b/src/dos/main.c index aed12e9..70ea449 100644 --- a/src/dos/main.c +++ b/src/dos/main.c @@ -15,6 +15,7 @@ #include "cfgopt.h" #include "logger.h" #include "tinyfps.h" +#include "cdpmi.h" #undef NOKEYB @@ -31,6 +32,10 @@ static quat_t rot = {0, 0, 0, 1}; int main(int argc, char **argv) { +#ifdef __DJGPP__ + __djgpp_nearptr_enable(); +#endif + fbsize = fb_width * fb_height * fb_bpp / 8; init_logger("demo.log"); diff --git a/src/dos/vbe.c b/src/dos/vbe.c index fd894fe..3ada182 100644 --- a/src/dos/vbe.c +++ b/src/dos/vbe.c @@ -16,7 +16,7 @@ } else { \ paddr = ((uint32_t)pseg << 4) + poffs; \ } \ - (ptr) = (void*)paddr; \ + (ptr) = (void*)phys_to_virt(paddr); \ } while(0) /* hijack the "VESA" sig field, to pre-cache number of modes */ @@ -40,7 +40,7 @@ int vbe_info(struct vbe_info *info) if(!(seg = dpmi_alloc(sizeof *info / 16, &sel))) { return -1; } - lowbuf = (void*)((uint32_t)seg << 4); + lowbuf = (void*)phys_to_virt((uint32_t)seg << 4); memcpy(lowbuf, "VBE2", 4); @@ -107,7 +107,7 @@ int vbe_mode_info(int mode, struct vbe_mode_info *minf) if(!(seg = dpmi_alloc(sizeof *minf / 16, &sel))) { return -1; } - lowbuf = (void*)((uint32_t)seg << 4); + lowbuf = (void*)phys_to_virt((uint32_t)seg << 4); regs.eax = 0x4f01; regs.ecx = mode; @@ -238,7 +238,7 @@ int vbe_setmode_crtc(uint16_t mode, struct vbe_crtc_info *crtc) if(!(seg = dpmi_alloc((sizeof *crtc + 15) / 16, &sel))) { return -1; } - lowbuf = (void*)((uint32_t)seg << 4); + lowbuf = (void*)phys_to_virt((uint32_t)seg << 4); memcpy(lowbuf, crtc, sizeof *crtc); @@ -293,7 +293,7 @@ int vbe_save(void *stbuf, int sz, unsigned int flags) if(!(seg = dpmi_alloc((sz + 15) / 16, &sel))) { return -1; } - lowbuf = (void*)((uint32_t)seg << 4); + lowbuf = (void*)phys_to_virt((uint32_t)seg << 4); regs.eax = 0x4f04; regs.edx = 1; /* save */ @@ -319,7 +319,7 @@ int vbe_restore(void *stbuf, int sz, unsigned int flags) if(!(seg = dpmi_alloc((sz + 15) / 16, &sel))) { return -1; } - lowbuf = (void*)((uint32_t)seg << 4); + lowbuf = (void*)phys_to_virt((uint32_t)seg << 4); memcpy(lowbuf, stbuf, sz); -- 1.7.10.4 From 5f395b1002b1a805ac424a09ca970cb8711872fb Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Sat, 14 Dec 2019 07:57:43 +0200 Subject: [PATCH 14/16] added GPL license --- COPYING | 674 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 674 insertions(+) create mode 100644 COPYING diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/COPYING @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. -- 1.7.10.4 From c1029b14c3fde9c98d524f17201364c695b6b117 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Sat, 14 Dec 2019 09:20:18 +0200 Subject: [PATCH 15/16] expanded the build instructions in the README --- README.md | 52 ++++++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 44 insertions(+), 8 deletions(-) diff --git a/README.md b/README.md index 496d395..102090e 100644 --- a/README.md +++ b/README.md @@ -1,17 +1,24 @@ -Building and running on DOS +Unnamed Mindlapse DOS demo for Pentium 133 +------------------------------------------ +The demo requires VESA Bios Extensions (VBE) 2.0. If your graphics card doesn't +support VBE 2.0 or greater, then make sure to run the `univbe` TSR first, or +the demo will fail to find a usable LFB video mode. + +Building on DOS with Watcom --------------------------- +NOTE: Don't. Watcom produces significantly worse code than GCC, and at the +moment watcom-compiled version of the demo crashes on 3D scenes for some reason +which I need to investigate at some point. Suspect either inline assembly with +missing "modify" part, or more likely some FPU optimization which fucks up the +clipper. + Make sure you have Watcom or OpenWatcom installed, and the appropriate env-vars set (the watcom installer automatically adds them to autoexec.bat by default). Run wmake to build. Needs dos4gw.exe in current dir. -The demo requires VESA Bios Extensions (VBE) 2.0. If your graphics card doesn't -support VBE 2.0 or greater, then make sure to run the `univbe` TSR first, or -the demo will fail to find a usable LFB video mode. - - -Cross-compile on GNU/Linux --------------------------- +OpenWatcom cross-compilation on UNIX +------------------------------------ source owdev script with contents (change WATCOM var as necessary): export WATCOM=$HOME/devel/ow @@ -24,6 +31,35 @@ Simply running ./demo.exe might invoke magic of the ancients to start wine, which will in turn start dosbox, which will execute the DOS binary! If the gods are slumbering in valhalla, just typing `dosbox demo.exe` should do the trick. +Building with DJGPP +------------------- +The DJGPP port of GCC is the recommended toolchain to use for building the demo, +either natively or cross-compiled on UNIX. + +For native DOS builds add the DJGPP bin directory to the path (usually +`c:\djgpp\bin`) and set the DJGPP environment variable to point to the +`djgpp.env` file. + +For cross-compiling on UNIX simply source the `setenv` file which comes with +DJGPP, which will set the `PATH` and `DJDIR` variables as necessary. + +In both cases, run `make -f Makefile.dj` to build. To run the resulting +`demo.exe` you'll need to copy `cwsdpmi.exe` to the same directory. You can find +it here: ftp://ftp.fu-berlin.de/pc/languages/djgpp/current/v2misc/csdpmi7b.zip + +When building natively on an old computer, and encounter a huge amount of disk +swapping, and corresponding ridiculously long compile times, make sure to +disable any memory managers and try again. `EMM386` may interfere with +`CWSDPMI`'s ability to use more than 32mb of RAM, and modern versions of GCC +need way more than that. Disable the memory manager with `emm386 off`, and +verify the amount of usable RAM with `go32-v2`. + +Another problem is the MS-DOS version of `HIMEM.SYS` which only reports up to +64mb. To use more than that, which is necessary for modern versions of GCC, you +can either disable `HIMEM.SYS` completely, or use the `HIMEM.SYS` driver that +comes with Windows 9x (DOS >= 7). Here's a copy in case you need it: +http://mutantstargoat.com/~nuclear/tmp/d7himem.sys + Building and running with the SDL backend ----------------------------------------- -- 1.7.10.4 From 3398fc6c4188104048f99b650a6cb90beda9b6ed Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Sat, 14 Dec 2019 10:54:44 +0200 Subject: [PATCH 16/16] disabled dep-files when building on dos, because it goes into an infinite loop --- Makefile.dj | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Makefile.dj b/Makefile.dj index fe89fcf..b95f943 100644 --- a/Makefile.dj +++ b/Makefile.dj @@ -12,7 +12,7 @@ else endif inc = -Isrc -Isrc/dos -Ilibs -Ilibs/imago/src -Ilibs/anim/src -Ilibs/mikmod/include -#opt = -O3 -ffast-math -fno-strict-aliasing +opt = -O3 -ffast-math -fno-strict-aliasing dbg = -g warn = -pedantic -Wall -Wno-unused-function -Wno-unused-variable @@ -27,12 +27,15 @@ $(bin): $(obj) imago anim mikmod %.cof: %.asm nasm -f coff -o $@ $< +ifneq ($(hostsys), dos) -include $(dep) +endif %.cof: %.c $(CC) $(CFLAGS) -o $@ -c $< %.dep: %.c + @echo dep $@ @$(CPP) $(CFLAGS) $< -MM -MT $(@:.dep=.cof) >$@ .PHONY: imago -- 1.7.10.4